Western Sulphite® Open Side Booklet with Digi-Clear Window - These SFI certified booklet window envelopes are manufactured using two side seams under construction, a Digi-Clear window and a traditional remoistening seal. Open Side Booklets have their opening on the long dimension - offering inserting ease and convenience. Note: This envelope is laser and toner based compatible.White Sulphite (SFI CERTIFIED) 92% BrightnessSmooth FinishTwo Side Seams UnderDigi-Clear WindowLaser Compatible Remoistening Seal Flap Down6 X 9 - 24 Western Sulphite SFI Open Side Booklet Digi-Clear Window #3 (1 1/8 x 4 1/2, 7/8L - 2 3/8B)